Date: Tue, 28 Dec 2021 08:27:10 +0100 From: =?UTF-8?Q?Morgan_Wesstr=c3=b6m?= <freebsd-database@pp.dyndns.biz> To: questions@freebsd.org Subject: Re: PF and tun1 Message-ID: <5f2cca65-daab-989c-5fd0-6a5373f5bd56@pp.dyndns.biz> In-Reply-To: <CABMOuVfxHtXzR0EC7P1h1KPYjpyxX9FnTyexLW4sThDpaE8PfA@mail.gmail.com> References: <CABMOuVfxHtXzR0EC7P1h1KPYjpyxX9FnTyexLW4sThDpaE8PfA@mail.gmail.com>
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On 2021-12-28 02:55, Alex Thomas wrote: > I am trying to get nebula working on tun1 with pf as my firewall. If I > turn pf off, everything works. How to I tell pf to ignore / let > everything pass on the tun1 device. > > vtnet0 = "vtnet0" > nebula1 = "tun1" > icmp_types = "{ echoreq unreach }" > table <bruteforce> persist > table <rfc6890> { 0.0.0.0/8 10.0.0.0/8 100.64.0.0/10 127.0.0.0/8 > 169.254.0.0/16 \ > 172.16.0.0/12 192.0.0.0/24 192.0.0.0/29 192.0.2.0/24 > 192.88.99.0/24 \ > 192.168.0.0/16 198.18.0.0/15 198.51.100.0/24 > 203.0.113.0/24 \ > 240.0.0.0/4 255.255.255.255/32 } > > set skip on lo0 > set skip on tun1 > set skip on $nebula1 > scrub in all fragment reassemble max-mss 1440 > antispoof quick for $vtnet0 > block in quick on egress from <rfc6890> > block return out quick on egress to <rfc6890> > block all > pass in on $vtnet0 proto tcp to port { 22222 } \ > keep state (max-src-conn 15, max-src-conn-rate 3/1, \ > overload <bruteforce> flush global) > pass out proto { tcp udp } to port { 22 53 80 123 443 } > pass out inet proto icmp icmp-type $icmp_types > In my experience the skip rules only work on interfaces that are available when pf starts, which excludes tun-interfaces. I don't know if this is by design. Remove your skip rules for tun1 and $nebula1 and just add a pass rule for that interface: pass on tun1 all Additionally, since you're quick blocking all traffic to and from private IP addresses, make sure you don't use any of those IP addresses on tun1. /Morgan
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